2 // Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
5 // FEATURE: reflow before allowing js to read from width/height
6 // FEATURE: fastpath for rows=1/cols=1
7 // FEATURE: mark to reflow starting with a certain child
8 // FEATURE: separate mark_for_reflow and mark_for_resize
9 // FEATURE: make all methods final
10 // FEATURE: use a linked list for the "frontier" when packing
11 // FEATURE: or else have a way to mark a column "same as last one"?
12 // FEATURE: reintroduce surface.abort
16 import org.ibex.util.*;
17 import org.ibex.translators.*;
21 * Encapsulates the data for a single Ibex box as well as all layout
25 * <p>The rendering process consists of four phases; each requires
26 * one DFS pass over the tree</p>
27 * <ol><li> <b>repacking</b>: children of a box are packed into columns
28 * and rows according to their colspan/rowspan attributes and
30 * <ol><li> <b>reconstraining</b>: Minimum and maximum sizes of columns are computed.
31 * <li> <b>resizing</b>: width/height and x/y positions of children
32 * are assigned, and PosChange/SizeChanges are triggered.
33 * <li> <b>repainting</b>: children draw their content onto the PixelBuffer.
36 * The first three passes together are called the <i>reflow</i> phase.
37 * Reflowing is done in a seperate pass since PosChanges and
38 * SizeChanges trigger an Surface.abort; if rendering were done in the same
39 * pass, rendering work done prior to the Surface.abort would be wasted.
41 public final class Box extends JSScope implements Scheduler.Task {
43 // Macros //////////////////////////////////////////////////////////////////////
46 //#define MARK_REPACK for(Box b2 = this; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
47 //#define MARK_REPACK_b for(Box b2 = b; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
48 //#define MARK_REPACK_parent for(Box b2 = parent; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
49 //#define MARK_REFLOW for(Box b2 = this; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
50 //#define MARK_REFLOW_b for(Box b2 = b; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
51 //#define MARK_RESIZE for(Box b2 = this; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
52 //#define MARK_RESIZE_b for(Box b2 = b; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
53 //#define CHECKSET_SHORT(prop) short nu = (short)toInt(value); if (nu == prop) break; prop = nu;
54 //#define CHECKSET_INT(prop) int nu = toInt(value); if (nu == prop) break; prop = nu;
55 //#define CHECKSET_FLAG(flag) boolean nu = toBoolean(value); if (nu == test(flag)) break; if (nu) set(flag); else clear(flag);
56 //#define CHECKSET_BOOLEAN(prop) boolean nu = toBoolean(value); if (nu == prop) break; prop = nu;
57 //#define CHECKSET_STRING(prop) if ((value==null&&prop==null)||(value!=null&&JS.toString(value).equals(prop))) break; prop=JS.toString(value);
59 protected Box() { super(null); }
61 static Hash boxToCursor = new Hash(500, 3); // FIXME memory leak
62 public static final int MAX_LENGTH = Integer.MAX_VALUE;
63 static final Font DEFAULT_FONT;
67 try { f = Font.getFont((Stream)Main.builtin.get("fonts/vera/Vera.ttf"), 10); }
68 catch(JSExn e) { Log.info(Box.class, "should never happen: "+e); }
73 // box properties can not be trapped
74 static final String[] props = new String[] {
75 "shrink", "hshrink", "vshrink", "x", "y", "width", "height", "cols", "rows",
76 "colspan", "rowspan", "align", "visible", "packed", "globalx", "globaly",
77 "minwidth", "maxwidth", "minheight", "maxheight", "indexof", "thisbox", "clip",
78 "numchildren", "redirect", "cursor", "mouse"
82 // events can have write traps, but not read traps
83 static final String[] events = new String[] {
84 "Press1", "Press2", "Press3",
85 "Release1", "Release2", "Release3",
86 "Click1", "Click2", "Click3",
87 "DoubleClick1", "DoubleClick2", "DoubleClick3",
88 "Enter", "Leave", "Move", "ChildChange",
89 "KeyPressed", "KeyReleased", "SizeChange",
90 "Focused", "Maximized", "Minimized", "Close"
93 // Flags //////////////////////////////////////////////////////////////////////
95 static final int MOUSEINSIDE = 0x00000001;
96 static final int VISIBLE = 0x00000002;
97 static final int PACKED = 0x00000004;
98 static final int HSHRINK = 0x00000008;
99 static final int VSHRINK = 0x00000010;
100 static final int BLACK = 0x00000020; // for red-black code
102 static final int FIXED = 0x00000040;
103 static final boolean ROWS = true;
104 static final boolean COLS = false;
106 static final int ISROOT = 0x00000080;
107 static final int REPACK = 0x00000100;
108 static final int REFLOW = 0x00000200;
109 static final int RESIZE = 0x00000400;
110 static final int RECONSTRAIN = 0x00000800;
111 static final int ALIGN_TOP = 0x00001000;
112 static final int ALIGN_BOTTOM = 0x00002000;
113 static final int ALIGN_LEFT = 0x00004000;
114 static final int ALIGN_RIGHT = 0x00008000;
115 static final int ALIGNS = 0x0000f000;
116 static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
117 static final int CLIP = 0x00020000;
118 static final int STOP_UPWARD_PROPAGATION = 0x00040000;
121 // Instance Data //////////////////////////////////////////////////////////////////////
125 int flags = VISIBLE | PACKED | REPACK | REFLOW | RESIZE | FIXED /* ROWS */ | STOP_UPWARD_PROPAGATION | CLIP;
127 private String text = null;
128 private Font font = DEFAULT_FONT;
129 private Picture texture = null;
130 private short strokewidth = 1;
131 public int fillcolor = 0x00000000;
132 private int strokecolor = 0xFF000000;
134 private int aspect = 0;
136 // specified directly by user
137 public LENGTH minwidth = 0;
138 public LENGTH maxwidth = MAX_LENGTH;
139 public LENGTH minheight = 0;
140 public LENGTH maxheight = MAX_LENGTH;
141 private short rows = 1;
142 private short cols = 0;
143 private short rowspan = 1;
144 private short colspan = 1;
146 // computed during reflow
147 private short row = 0;
148 private short col = 0;
151 public LENGTH ax = 0; // FEATURE: roll these into x/y; requires lots of changes
152 public LENGTH ay = 0; // FEATURE: roll these into x/y; requires lots of changes; perhaps y()?
153 public LENGTH width = 0;
154 public LENGTH height = 0;
155 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
156 private LENGTH contentheight = 0;
159 private VectorGraphics.VectorPath path = null;
160 private VectorGraphics.Affine transform = null;
161 private VectorGraphics.RasterPath rpath = null;
162 private VectorGraphics.Affine rtransform = null;
165 // Instance Methods /////////////////////////////////////////////////////////////////////
167 public final int fontSize() { return font == null ? DEFAULT_FONT.pointsize : font.pointsize; }
169 /** invoked when a resource needed to render ourselves finishes loading */
170 public void perform() throws JSExn {
172 // FIXME; we can't assume that just because we were performed the image is loaded.
173 // as external events have occured, check the state of box
174 if (texture != null) {
175 if (texture.isLoaded) { minwidth = min(texture.width, maxwidth); minheight = min(texture.height, maxheight); }
176 else { JS res = texture.stream; texture = null; throw new JSExn("image not found: "+res.unclone()); }
178 Log.warn(Box.class, "perform() called with null texture");
186 // FEATURE: use cx2/cy2 format
187 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
188 public void dirty() { dirty(0, 0, width, height); }
189 public void dirty(int x, int y, int w, int h) {
190 for(Box cur = this; cur != null; cur = cur.parent) {
191 // x and y have a different meaning on the root box
192 if (cur.parent != null && cur.test(CLIP)) {
193 w = min(x + w, cur.width) - max(x, 0);
194 h = min(y + h, cur.height) - max(y, 0);
198 if (w <= 0 || h <= 0) return;
199 if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
206 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
208 // worst case runtime = O(numboxes * numboxes_in_widest_row)
210 private static Box[] frontier = new Box[65535]; // FIXME: GC hazard
212 /** pack the boxes into rows and columns; also computes contentwidth */
214 for(Box child = getChild(0); child != null; child = child.nextSibling()) child.pack();
215 int frontier_size = 0; contentwidth = 0; contentheight = 0;
216 //#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan \
217 // contentheight/contentwidth contentwidth/contentheight
218 if (treeSize() > 0 && test(FIXED) == COLS) {
220 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
221 if (!child.test(PACKED) || !child.test(VISIBLE)) continue;
222 child.col = (short)(frontier_size <= 0 ? 0 : (frontier[frontier_size-1].col + frontier[frontier_size-1].colspan));
223 child.row = (short)(frontier_size <= 0 ? 0 : frontier[frontier_size-1].row);
224 if (child.col + min(cols,child.colspan) > cols) { child.col = 0; child.row++; }
225 for(int i=0; i<frontier_size; i++)
226 if (frontier[i].row + frontier[i].rowspan <= child.row) {
227 frontier[i--] = frontier[--frontier_size]; frontier[frontier_size] = null;
228 } else if (frontier[i].col<child.col+min(cols,child.colspan)&&frontier[i].col+frontier[i].colspan>child.col) {
229 child.col = (short)(frontier[i].col + frontier[i].colspan);
230 if (child.col + min(cols,child.colspan) > cols) {
231 child.row = (short)(frontier[i].row + frontier[i].rowspan);
232 for(i--; i>0; i--) child.row = (short)min(row, frontier[i].row + frontier[i].rowspan);
233 child.col = (short)0;
237 frontier[frontier_size++] = child;
239 for(int i=0; i<frontier_size; i++){rows=(short)max(rows, frontier[i].row + frontier[i].rowspan); frontier[i] = null; }
243 //#repeat contentwidth/contentheight contentheight/contentwidth minwidth/minheight row/col col/row \
244 // textwidth/textheight maxwidth/maxheight cols/rows rows/cols colspan/rowspan rowspan/colspan
245 contentwidth = bound(minwidth,
247 font == null || text == null ? 0 : font.textwidth(text)),
252 void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
253 if (x != this.x || y != this.y || width != this.width || height != this.height) {
254 boolean sizechange = (this.width != width || this.height != height) && getTrap("SizeChange") != null;
256 int thisx = parent == null ? 0 : this.x;
257 int thisy = parent == null ? 0 : this.y;
258 // we can't reenable this until we track surface-relative sizes; imagine clear surface with nonclear children
259 if (false /*texture == null && (text == null || text.equals(""))*/) {
260 if ((fillcolor & 0xff000000) == 0) break;
261 if (this.x == x && this.y == y) {
262 Box who = (parent == null ? this : parent);
263 who.dirty(thisx+min(this.width,width), thisy, Math.abs(width-this.width), max(this.height, height));
264 who.dirty(thisx, thisy+min(this.height,height), min(this.width, width), Math.abs(height-this.height));
268 (parent == null ? this : parent).dirty(thisx, thisy, this.width, this.height);
269 this.width = width; this.height = height; this.x = x; this.y = y;
272 this.width = width; this.height = height; this.x = x; this.y = y;
273 if (sizechange) putAndTriggerTrapsAndCatchExceptions("SizeChange", T);
277 private static float[] coeff = null;
278 private static Simplex lp_h = new Simplex(65535, 65535, 65535);
279 private static Simplex lp = new Simplex(65535, 65535, 65535);
281 private static int[] regions = new int[65535];
282 private static int[] regions_v = new int[65535];
283 private static int numregions = 0;
284 private static int numregions_v = 0;
285 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height HSHRINK/VSHRINK numregions/numregions_v \
286 // maxwidth/maxheight cols/rows minwidth/minheight lp_h/lp lp_h/lp easy_width/easy_height regions/regions_v \
287 // computeRegions/computeRegions_v
288 private void computeRegions() {
290 for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling()) {
291 regions[numregions++] = c.col;
292 regions[numregions++] = min(cols, c.col+c.colspan);
294 Vec.sortInts(regions, 0, numregions);
296 int newnumregions = numregions;
297 for(int i=1; i<numregions; i++) {
298 if (regions[j] != regions[i]) j++;
299 else newnumregions--;
300 regions[j] = regions[i];
302 numregions = newnumregions;
303 if (regions[numregions-1] == cols) numregions--;
304 else regions[numregions] = cols;
308 void solve(boolean findMinimum) {
309 int numkids = 0; for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling()) numkids++;
310 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height HSHRINK/VSHRINK numregions/numregions_v \
311 // maxwidth/maxheight cols/rows minwidth/minheight lp_h/lp lp_h/lp easy_width/easy_height regions/regions_v \
312 // computeRegions/computeRegions_v
313 if (numkids > 0) do {
315 int nc = numregions * 3 + numkids * 2 + 3;
316 if (coeff == null || nc+1>coeff.length) coeff = new float[nc+1];
319 for(int i=0; i<coeff.length; i++) coeff[i] = (float)0.0;
321 coeff[numregions*2+numkids] = (float)10000.0; // priority 1: sum of columns no greater than parent
322 for(int i=numregions*2; i<numregions*2+numkids; i++) coeff[i] = (float)100.0; // priority 2: honor maxwidths
323 for(int i=numregions; i<numregions*2; i++) coeff[i] = (float)(0.1); // priority 3: equalize columns
325 coeff[numregions*2+numkids] = (float)1.0;
327 lp_h.setObjective(coeff, false);
329 // priority 1: sum of columns as close to parent's width as possible
330 for(int i=0; i<coeff.length; i++) coeff[i] = (i<numregions) ? (float)(regions[i+1] - regions[i]) : (float)0.0;
331 coeff[numregions*2+numkids] = (float)-1.0;
332 if (!findMinimum) lp_h.add_constraint(coeff, Simplex.EQ, (float)width);
333 else lp_h.add_constraint(coeff, Simplex.LE, (float)0);
336 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling()) {
338 // invariant: honor minwidths
339 for(int i=0; i<coeff.length; i++) coeff[i] = (float)0.0;
340 for(int r=0; r<numregions; r++)
341 if (regions[r] >= child.col && regions[r+1] <= min(child.col+child.colspan,cols))
342 coeff[r] = (float)(regions[r+1] - regions[r]);
343 lp_h.add_constraint(coeff, Simplex.GE, (float)child.contentwidth);
345 // priority 2: honor maxwidths
346 int child_maxwidth = child.test(HSHRINK) ? min(child.maxwidth, child.contentwidth) : child.maxwidth;
347 if (child_maxwidth < Integer.MAX_VALUE) {
348 for(int i=0; i<coeff.length; i++) coeff[i] = (float)0.0;
349 for(int r=0; r<numregions; r++)
350 if (regions[r] >= child.col && regions[r+1] <= min(child.col+child.colspan,cols))
351 coeff[r] = (float)(regions[r+1] - regions[r]);
352 coeff[numregions*2+childnum] = (float)-1.0;
353 lp_h.add_constraint(coeff, Simplex.LE, (float)child_maxwidth);
360 // priority 3: equalize columns
361 float avg = ((float)width)/((float)numregions);
362 for(int r=0; r<numregions; r++) {
363 float weight = (float)(regions[r+1] - regions[r]);
364 for(int k=0; k<coeff.length; k++) coeff[k] = (float)(k==r?weight:k==(numregions+r)?-1.0:0.0);
365 lp_h.add_constraint(coeff, Simplex.LE, avg * weight);
366 for(int k=0; k<coeff.length; k++) coeff[k] = (float)(k==r?weight:k==(numregions+r)?1.0:0.0);
367 lp_h.add_constraint(coeff, Simplex.GE, avg * weight);
371 try { switch(lp_h.solve()) {
372 case Simplex.UNBOUNDED: Log.warn(this, "simplex claims unboundedness; this should never happen"); break;
373 case Simplex.INFEASIBLE: Log.debug(this, "simplex claims infeasibility; this should never happen"); break;
374 case Simplex.MILP_FAIL: Log.warn(this, "simplex claims MILP_FAIL; this should never happen"); break;
375 case Simplex.RUNNING: Log.warn(this, "simplex still RUNNING; this should never happen"); break;
376 case Simplex.FAILURE: Log.warn(this, "simplex claims FAILURE; this should never happen"); break;
377 } } catch (Error e) {
378 Log.warn(this, "got an Error in simplex solver; not sure why this happens");
382 if (findMinimum) contentwidth = Math.round(lp_h.solution[lp_h.rows + (2*numregions + numkids + 1)]);
389 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
390 if (!child.test(VISIBLE)) continue;
391 int child_width, child_height, child_x, child_y;
392 if (!child.test(PACKED)) {
393 child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - Math.abs(child.ax));
394 child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - Math.abs(child.ay));
395 child_width = max(child.minwidth, child_width);
396 child_height = max(child.minheight, child_height);
397 int gap_x = width - child_width;
398 int gap_y = height - child_height;
399 child_x = child.ax + (child.test(ALIGN_RIGHT) ? gap_x : !child.test(ALIGN_LEFT) ? gap_x / 2 : 0);
400 child_y = child.ay + (child.test(ALIGN_BOTTOM) ? gap_y : !child.test(ALIGN_TOP) ? gap_y / 2 : 0);
403 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
404 // child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
405 // child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP lp_h/lp \
406 // numregions/numregions_v regions/regions_v
413 for(int r=0; r<numregions; r++)
414 if (regions[r] >= child.col && regions[r+1] <= min(child.col+child.colspan,cols))
415 child_width += Math.round(lp_h.solution[lp_h.rows+r+1] * (regions[r+1] - regions[r]));
416 else if (regions[r+1] <= child.col)
417 child_x += Math.round(lp_h.solution[lp_h.rows+r+1] * (regions[r+1] - regions[r]));
419 diff = (child_width - (child.test(HSHRINK) ? child.contentwidth : min(child_width, child.maxwidth)));
420 child_x += (child.test(ALIGN_RIGHT) ? diff : child.test(ALIGN_LEFT) ? 0 : diff / 2);
424 child.resize(child_x, child_y, child_width, child_height);
427 for(Box child = getChild(0); child != null; child = child.nextSibling())
428 if (child.test(VISIBLE) && child.treeSize() > 0)
434 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
436 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
437 void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, VectorGraphics.Affine a) {
438 if (!test(VISIBLE)) return;
439 int globalx = parentx + (parent == null ? 0 : x);
440 int globaly = parenty + (parent == null ? 0 : y);
442 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
444 cx1 = max(cx1, globalx);
445 cy1 = max(cy1, globaly);
446 cx2 = min(cx2, globalx + width);
447 cy2 = min(cy2, globaly + height);
448 if (cx2 <= cx1 || cy2 <= cy1) return;
451 if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
452 buf.fillTrapezoid(cx1, cx2, cy1, cx1, cx2, cy2, (fillcolor & 0xFF000000) == 0 ? 0xffffffff : fillcolor);
454 // FIXME: do aspect in here
455 if (texture != null && texture.isLoaded)
456 for(int x = globalx; x < cx2; x += texture.width)
457 for(int y = globaly; y < cy2; y += texture.height)
458 buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
460 if (text != null && !text.equals("") && font != null) {
461 int gap_x = width - font.textwidth(text);
462 int gap_y = height - font.textheight(text);
463 int text_x = globalx + (test(ALIGN_RIGHT) ? gap_x : !test(ALIGN_LEFT) ? gap_x/2 : 0);
464 int text_y = globaly + (test(ALIGN_BOTTOM) ? gap_y : !test(ALIGN_TOP) ? gap_y/2 : 0);
465 font.rasterizeGlyphs(text, buf, strokecolor, text_x, text_y, cx1, cy1, cx2, cy2);
468 for(Box b = getChild(0); b != null; b = b.nextSibling())
469 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
473 // Methods to implement org.ibex.js.JS //////////////////////////////////////
476 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
482 if (b.parent != this)
483 return (redirect == null || redirect == this) ?
485 redirect.callMethod(method, a0, a1, a2, rest, nargs);
486 return N(b.getIndexInParent());
491 ret.put("x", N(b.localToGlobalX(0) - localToGlobalX(0)));
492 ret.put("y", N(b.localToGlobalY(0) - localToGlobalY(0)));
498 return super.callMethod(method, a0, a1, a2, rest, nargs);
501 protected boolean isTrappable(Object key, boolean isRead) {
502 if (key == null) return false;
503 else if (key instanceof String) {
504 // not allowed to trap box properties, and no read traps on events
505 String name = (String)key;
506 for (int i=0; i < props.length; i++) if (name.equals(props[i])) return false;
507 if (isRead) for (int i=0; i < events.length; i++) if (name.equals(events[i])) return false;
513 public Object get(Object name) throws JSExn {
514 if (name instanceof Number)
515 return redirect == null ? null : redirect == this ? getChild(toInt(name)) : redirect.get(name);
518 case "surface": return parent == null ? null : parent.getAndTriggerTraps("surface");
519 case "indexof": return METHOD;
520 case "distanceto": return METHOD;
521 case "text": return text;
522 case "path": throw new JSExn("cannot read from the path property");
523 case "fill": return colorToString(fillcolor);
524 case "strokecolor": return colorToString(strokecolor);
525 case "textcolor": return colorToString(strokecolor);
526 case "font": return font == null ? null : font.stream;
527 case "fontsize": return font == null ? N(10) : N(font.pointsize);
528 case "strokewidth": return N(strokewidth);
529 case "align": return alignToString();
530 case "thisbox": return this;
531 case "shrink": return B(test(HSHRINK) || test(VSHRINK));
532 case "hshrink": return B(test(HSHRINK));
533 case "vshrink": return B(test(VSHRINK));
534 case "aspect": return N(aspect);
535 case "x": return (parent == null || !test(VISIBLE)) ? N(0) : test(PACKED) ? N(x) : N(ax);
536 case "y": return (parent == null || !test(VISIBLE)) ? N(0) : test(PACKED) ? N(y) : N(ay);
537 case "cols": return test(FIXED) == COLS ? N(cols) : N(0);
538 case "rows": return test(FIXED) == ROWS ? N(rows) : N(0);
539 case "colspan": return N(colspan);
540 case "rowspan": return N(rowspan);
541 case "width": return N(width);
542 case "height": return N(height);
543 case "minwidth": return N(minwidth);
544 case "maxwidth": return N(maxwidth);
545 case "minheight": return N(minheight);
546 case "maxheight": return N(maxheight);
547 case "clip": return B(test(CLIP));
548 case "visible": return B(test(VISIBLE) && (parent == null || (parent.get("visible") == T)));
549 case "packed": return B(test(PACKED));
550 case "globalx": return N(localToGlobalX(0));
551 case "globaly": return N(localToGlobalY(0));
552 case "cursor": return test(CURSOR) ? boxToCursor.get(this) : null;
554 if (getSurface() == null) return null;
555 if (getSurface()._mousex == Integer.MAX_VALUE)
556 throw new JSExn("you cannot read from the box.mouse property in background thread context");
558 case "numchildren": return redirect == null ? N(0) : redirect == this ? N(treeSize()) : redirect.get("numchildren");
559 case "redirect": return redirect == null ? null : redirect == this ? T : redirect.get("redirect");
560 case "Minimized": if (parent == null && getSurface() != null) return B(getSurface().minimized);
561 default: return super.get(name);
563 throw new Error("unreachable"); // unreachable
566 private class Mouse extends JS.Cloneable {
567 public Object get(Object key) {
569 case "x": return N(globalToLocalX(getSurface()._mousex));
570 case "y": return N(globalToLocalY(getSurface()._mousey));
572 // this might not get recomputed if we change mousex/mousey...
573 case "inside": return B(test(MOUSEINSIDE));
579 public void setMaxWidth(Object value) {
580 do { CHECKSET_INT(maxwidth); MARK_RESIZE; } while(false);
581 if (parent == null && getSurface() != null) getSurface().pendingWidth = maxwidth;
583 public void setMaxHeight(Object value) {
584 do { CHECKSET_INT(maxheight); MARK_RESIZE; } while(false);
585 if (parent == null && getSurface() != null) getSurface().pendingHeight = maxheight;
588 public void put(Object name, Object value) throws JSExn {
589 if (name instanceof Number) { put(toInt(name), value); return; }
591 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
592 case "strokecolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
593 case "textcolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
594 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
595 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
596 case "shrink": put("hshrink", value); put("vshrink", value);
597 case "hshrink": CHECKSET_FLAG(HSHRINK); MARK_RESIZE;
598 case "vshrink": CHECKSET_FLAG(VSHRINK); MARK_RESIZE;
599 case "width": put("maxwidth", value); put("minwidth", value); MARK_RESIZE;
600 case "height": put("maxheight", value); put("minheight", value); MARK_RESIZE;
601 case "maxwidth": setMaxWidth(value);
602 case "minwidth": CHECKSET_INT(minwidth); MARK_RESIZE;
603 if (parent == null && getSurface() != null)
604 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
605 case "maxheight": setMaxHeight(value);
606 case "minheight": CHECKSET_INT(minheight); MARK_RESIZE;
607 if (parent == null && getSurface() != null)
608 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
609 case "colspan": if (toInt(value) <= 0) return; CHECKSET_SHORT(colspan); MARK_REPACK_parent;
610 case "rowspan": if (toInt(value) <= 0) return; CHECKSET_SHORT(rowspan); MARK_REPACK_parent;
611 case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); MARK_REPACK;
612 case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); MARK_REPACK;
613 case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
614 case "visible": CHECKSET_FLAG(VISIBLE); dirty(); MARK_RESIZE; dirty();
615 case "packed": CHECKSET_FLAG(PACKED); MARK_REPACK_parent;
616 case "aspect": CHECKSET_INT(aspect); dirty();
617 case "globalx": put("x", N(globalToLocalX(toInt(value))));
618 case "globaly": put("y", N(globalToLocalY(toInt(value))));
619 case "align": clear(ALIGNS); setAlign(value == null ? "center" : value); MARK_RESIZE;
620 case "cursor": setCursor(value);
621 case "fill": setFill(value);
623 int mousex = toInt(((JS)value).get("x"));
624 int mousey = toInt(((JS)value).get("y"));
625 getSurface()._mousex = localToGlobalX(mousex);
626 getSurface()._mousey = localToGlobalY(mousey);
627 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
628 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
629 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
631 if (value == null) { redirect = null; return; }
632 for(Box cur = (Box)value; cur != null; cur = cur.parent)
633 if (cur == redirect) {
634 redirect = (Box)value;
637 JS.error("redirect can only be set to a descendant of its current value");
639 if(!(value instanceof Stream)) throw new JSExn("You can only put streams to the font property");
640 font = value == null ? null : Font.getFont((Stream)value, font == null ? 10 : font.pointsize);
643 case "fontsize": font = Font.getFont(font == null ? null : font.stream, toInt(value)); MARK_RESIZE; dirty();
644 case "x": if (parent==null && Surface.fromBox(this)!=null) {
647 if (test(PACKED) && parent != null) return;
648 dirty(); CHECKSET_INT(ax);
649 dirty(); MARK_RESIZE;
652 case "y": if (parent==null && Surface.fromBox(this)!=null) {
655 if (test(PACKED) && parent != null) return;
656 dirty(); CHECKSET_INT(ay);
657 dirty(); MARK_RESIZE;
661 if (getSurface() != null && value != null) getSurface().setTitleBarText(JS.toString(value));
662 super.put(name,value);
664 case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
665 case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
666 case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
667 case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
668 case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
669 case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
670 case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
671 case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
672 case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
673 case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
674 case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
675 case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
676 case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
677 case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
678 case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
680 case "HScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
681 parent.putAndTriggerTraps(name, N(((Number)value).floatValue() * ((float)parent.fontSize()) / ((float)fontSize())));
682 case "VScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
683 parent.putAndTriggerTraps(name, N(((Number)value).floatValue() * ((float)parent.fontSize()) / ((float)fontSize())));
685 case "_Move": propagateDownward(name, value, false);
686 case "_Press1": propagateDownward(name, value, false);
687 case "_Press2": propagateDownward(name, value, false);
688 case "_Press3": propagateDownward(name, value, false);
689 case "_Release1": propagateDownward(name, value, false);
690 case "_Release2": propagateDownward(name, value, false);
691 case "_Release3": propagateDownward(name, value, false);
692 case "_Click1": propagateDownward(name, value, false);
693 case "_Click2": propagateDownward(name, value, false);
694 case "_Click3": propagateDownward(name, value, false);
695 case "_DoubleClick1": propagateDownward(name, value, false);
696 case "_DoubleClick2": propagateDownward(name, value, false);
697 case "_DoubleClick3": propagateDownward(name, value, false);
698 case "_KeyPressed": propagateDownward(name, value, false);
699 case "_KeyReleased": propagateDownward(name, value, false);
700 case "_HScroll": propagateDownward(name, value, false);
701 case "_VScroll": propagateDownward(name, value, false);
703 case "SizeChange": return;
704 case "ChildChange": return;
705 case "Enter": return;
706 case "Leave": return;
708 case "thisbox": if (value == null) removeSelf();
710 default: super.put(name, value);
714 private String alignToString() {
715 switch(flags & ALIGNS) {
716 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
717 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
718 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
719 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
720 case ALIGN_TOP: return "top";
721 case ALIGN_BOTTOM: return "bottom";
722 case ALIGN_LEFT: return "left";
723 case ALIGN_RIGHT: return "right";
724 case 0: return "center";
725 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
729 private void setAlign(Object value) {
731 case "center": clear(ALIGNS);
732 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
733 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
734 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
735 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
736 case "top": set(ALIGN_TOP);
737 case "bottom": set(ALIGN_BOTTOM);
738 case "left": set(ALIGN_LEFT);
739 case "right": set(ALIGN_RIGHT);
740 default: JS.log("invalid alignment \"" + value + "\"");
744 private void setCursor(Object value) {
745 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
746 if (value.equals(boxToCursor.get(this))) return;
748 boxToCursor.put(this, value);
749 Surface surface = getSurface();
750 if (surface != null) {
751 String tempcursor = surface.cursor;
752 propagateDownward(null, null, false);
753 if (surface.cursor != tempcursor) surface.syncCursor();
757 private void setFill(Object value) throws JSExn {
759 // FIXME: Check this... does this make it transparent?
762 } else if (value instanceof String) {
763 // FIXME check double set
764 int newfillcolor = stringToColor((String)value);
765 if (newfillcolor == fillcolor) return;
766 fillcolor = newfillcolor;
767 } else if(value instanceof JS) {
768 texture = Picture.load((JS)value, this);
769 if (texture != null && texture.isLoaded) perform();
771 throw new JSExn("fill must be null, a String, or a stream, not a " + value.getClass());
776 // FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
778 * Handles events which propagate down the box tree. If obscured
779 * is set, then we merely check for Enter/Leave.
781 private void propagateDownward(Object name_, Object value, boolean obscured) {
783 String name = (String)name_;
784 if (getSurface() == null) return;
785 int x = globalToLocalX(getSurface()._mousex);
786 int y = globalToLocalY(getSurface()._mousey);
787 boolean wasinside = test(MOUSEINSIDE);
788 boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
789 if (!wasinside && isinside) {
791 putAndTriggerTrapsAndCatchExceptions("Enter", T);
793 if (isinside && test(CURSOR)) getSurface().cursor = (String)boxToCursor.get(this);
794 if (wasinside && !isinside) {
796 putAndTriggerTrapsAndCatchExceptions("Leave", T);
799 boolean found = false;
800 if (wasinside || isinside)
801 for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
802 boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
803 Object value2 = value;
804 if (name.equals("_HScroll") || name.equals("_VScroll"))
805 value2 = N(((Number)value).floatValue() * ((float)child.fontSize()) / (float)fontSize());
806 if (obscured || !child.inside(x - child.x, y - child.y)) {
807 child.propagateDownward(name, value2, true);
810 child.clear(STOP_UPWARD_PROPAGATION);
811 if (name != null) child.putAndTriggerTrapsAndCatchExceptions(name, value2);
812 else child.propagateDownward(name, value2, obscured);
814 if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
816 if (child.inside(x - child.x, y - child.y))
817 if (name != null && name.equals("_Move")) obscured = true;
821 if (!obscured && !found)
822 if ("_Move".equals(name) || name.startsWith("_Release") || wasinside)
824 putAndTriggerTrapsAndCatchExceptions(name.substring(1), value);
827 private static int stringToColor(String s) {
828 // FIXME support three-char strings by doubling digits
829 if (s == null) return 0x00000000;
830 else if (SVG.colors.get(s) != null) return 0xFF000000 | toInt(SVG.colors.get(s));
831 else if (s.length() == 7 && s.charAt(0) == '#') try {
834 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
835 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
836 Integer.parseInt(s.substring(5, 7), 16);
837 } catch (NumberFormatException e) {
838 Log.info(Box.class, "invalid color " + s);
841 else return 0; // FEATURE: error?
844 private static String colorToString(int argb) {
845 if ((argb & 0xFF000000) == 0) return null;
846 String red = Integer.toHexString((argb & 0x00FF0000) >> 16);
847 String green = Integer.toHexString((argb & 0x0000FF00) >> 8);
848 String blue = Integer.toHexString(argb & 0x000000FF);
849 if (red.length() < 2) red = "0" + red;
850 if (blue.length() < 2) blue = "0" + blue;
851 if (green.length() < 2) green = "0" + green;
852 return "#" + red + green + blue;
855 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
856 public static Box whoIs(Box cur, int x, int y) {
858 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
862 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
863 // ANY part of Ibex, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
865 if (!cur.test(VISIBLE)) return null;
866 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
868 for(int i=cur.treeSize() - 1; i>=0; i--) {
869 Box child = cur.getChild(i);
870 if (child == null) continue; // since this method is unsynchronized, we have to double-check
873 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
883 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
885 void mark_for_repack() { MARK_REPACK; }
886 public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
887 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
888 public Surface getSurface() { return Surface.fromBox(getRoot()); }
889 Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
890 Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
891 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
892 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
893 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
894 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
896 static short min(short a, short b) { if (a<b) return a; else return b; }
897 static int min(int a, int b) { if (a<b) return a; else return b; }
898 static float min(float a, float b) { if (a<b) return a; else return b; }
900 static short max(short a, short b) { if (a>b) return a; else return b; }
901 static int max(int a, int b) { if (a>b) return a; else return b; }
902 static float max(float a, float b) { if (a>b) return a; else return b; }
904 static int min(int a, int b, int c) { if (a<=b && a<=c) return a; else if (b<=c && b<=a) return b; else return c; }
905 static int max(int a, int b, int c) { if (a>=b && a>=c) return a; else if (b>=c && b>=a) return b; else return c; }
906 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
907 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
909 void set(int mask) { flags |= mask; }
910 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
911 void clear(int mask) { flags &= ~mask; }
912 boolean test(int mask) { return ((flags & mask) == mask); }
915 // Tree Handling //////////////////////////////////////////////////////////////////////
917 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
918 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
919 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
920 public final Box getChild(int i) {
921 if (i < 0) return null;
922 if (i >= treeSize()) return null;
923 return (Box)getNode(i);
926 // Tree Manipulation /////////////////////////////////////////////////////////////////////
929 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
930 Surface surface = Surface.fromBox(this);
931 if (surface != null) surface.dispose(true);
934 /** remove the i^th child */
935 public void removeChild(int i) {
939 b.clear(MOUSEINSIDE);
943 putAndTriggerTrapsAndCatchExceptions("ChildChange", b);
946 public void put(int i, Object value) throws JSExn {
949 if (value != null && !(value instanceof Box)) {
950 if (Log.on) JS.warn("attempt to set a numerical property on a box to a non-box");
954 if (redirect == null) {
955 if (value == null) putAndTriggerTrapsAndCatchExceptions("ChildChange", getChild(i));
956 else JS.warn("attempt to add/remove children to/from a node with a null redirect");
958 } else if (redirect != this) {
959 if (value != null) putAndTriggerTrapsAndCatchExceptions("ChildChange", value);
960 redirect.put(i, value);
962 Box b = (Box)redirect.get(new Integer(i));
963 if (b != null) putAndTriggerTrapsAndCatchExceptions("ChildChange", b);
966 } else if (value == null) {
967 if (i < 0 || i > treeSize()) return;
970 putAndTriggerTrapsAndCatchExceptions("ChildChange", b);
975 // check if box being moved is currently target of a redirect
976 for(Box cur = b.parent; cur != null; cur = cur.parent)
977 if (cur.redirect == b) {
978 if (Log.on) JS.warn("attempt to move a box that is the target of a redirect");
982 // check for recursive ancestor violation
983 for(Box cur = this; cur != null; cur = cur.parent)
985 if (Log.on) JS.warn("attempt to make a node a parent of its own ancestor");
986 if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
990 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
994 // need both of these in case child was already uncalc'ed
999 putAndTriggerTrapsAndCatchExceptions("ChildChange", b);
1003 void putAndTriggerTrapsAndCatchExceptions(Object name, Object val) {
1005 putAndTriggerTraps(name, val);
1007 JS.log("caught js exception while putting to trap \""+name+"\"");
1009 } catch (Exception e) {
1010 JS.log("caught exception while putting to trap \""+name+"\"");
1025 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
1026 if ((flags & HSHRINK) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
1027 if ((flags & VSHRINK) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
1028 // FIXME: separate offset_x needed for the path
1030 // #repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
1031 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
1032 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
1033 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
1034 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
1035 int left = min(min(x1, x2), min(x3, x4));
1036 int right = max(max(x1, x2), max(x3, x4));
1037 contentwidth = max(contentwidth, right - left);
1038 offset_x = -1 * left;
1045 if (rtransform == null) rpath = null;
1046 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
1048 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
1049 rtransform = a.copy();
1051 if (rpath == null) rpath = path.realize((rtransform = a) == null ? VectorGraphics.Affine.identity() : a);
1052 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
1053 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
1059 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
1060 if (transform != null) a2.multiply(transform);
1061 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));